import cv2

cap1=cv2.VideoCapture(1) #sortie 1 Webcam USB
USBcamwin="USBcam"  # nom de la fenetre Webcam

while True:
    ret, frame1 = cap1.read()
    cap1.set(10,60) #brightness
    cap1.set(11,60) #contrast
    cap1.set(12,60) #saturation
    cap1.set(13,60) #teinte
    cv2.imshow(USBcamwin, frame1)
    key=cv2.waitKey(1)
    if key & 0xFF == ord('q'):
        cv2.destroyAllWindows   
        break